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Finding the Fourth Proportional to 610,064.80, 915,097.20 and 397,488.40

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Solution

The fourth proportional to 610,064.80, 915,097.20 and 397,488.40 is: 596,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,064.80 : 915,097.20 = 397,488.40 : x
  2. Step 2: Convert to fraction form
    610,064.80/915,097.20 = 397,488.40/x
  3. Step 3: Cross multiply
    610,064.80x = 915,097.20 × 397,488.40
  4. Step 4: Simplify right side
    610,064.80x = 363,740,521,872.48
  5. Step 5: Solve for x
    x = 363,740,521,872.48/610,064.80
  6. Step 6: Final answer
    x = 596,232.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.